Artículo
Dark exciton preparation in a quantum dot by a longitudinal light field tuned to higher exciton states
Fecha de publicación:
01/2021
Editorial:
American Physical Society
Revista:
Physical Review Research
ISSN:
2643-1564
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Several important proposals to use semiconductor quantum dots in quantum information technology rely on the control of the dark exciton ground states, such as dark exciton based qubits with a microsecond lifetime. In this paper, we present an efficient way to occupy the dark exciton ground state by a single short laser pulse. The scheme is based on an optical excitation with a longitudinal field component featured by, e.g., radially polarized beams or certain Laguerre-Gauss or Bessel beams. Utilizing this component, we show within a configuration interaction approach that high-energy exciton states composed of light-hole excitons and higher dark heavy-hole excitons can be addressed. When the higher exciton relaxes, a dark exciton in its ground state is created.
Palabras clave:
OPTICAL VORTEX
,
QUANTUM DOT
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Articulos(IMIT)
Articulos de INST.DE MODELADO E INNOVACION TECNOLOGICA
Articulos de INST.DE MODELADO E INNOVACION TECNOLOGICA
Citación
Holtkemper, M.; Quinteiro, Guillermo Federico; Reiter, Doris E.; Kuhn, Tilmann; Dark exciton preparation in a quantum dot by a longitudinal light field tuned to higher exciton states; American Physical Society; Physical Review Research; 3; 1; 1-2021; 1-11
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